Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe4e58be04614ccf…

MALICIOUS

PDF

47.8 KB Created: 2020-08-11 13:37:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 837e340822a98c2228eaec36efa060f4 SHA-1: 914b3733787d4e5f102ce2df8090c666d7a7c324 SHA-256: fe4e58be04614ccf1c5588cb78fbd5f8d458994c5b37a11d584632b41da3191d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=cauchy+schwarz+inequality+problems+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, including 'https://cdn.shopify.com/s/files/1/0428/1267/0111/files/gta_vice_city_crackeado.pdf'. The document body, though heavily obfuscated, contains references to these URLs, suggesting a social engineering attempt to drive traffic to malicious infrastructure.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=cauchy+schwarz+inequality+problems+pdf
    • http://files.lawtonacademyrobotics.com/uploads/1/3/1/6/131637016/4885668.pdf
    • http://files.theelevatedtravel.com/uploads/1/3/1/0/131070231/6725238.pdf
    • http://files.southingtonrepublicans.net/uploads/1/3/1/0/131071258/5af5be4d5502295.pdf
    • http://misujo.prolyticsconsulting.com/uploads/1/3/0/7/130740510/ee30ef0eb57.pdf
    • https://cdn.shopify.com/s/files/1/0428/1267/0111/files/gta_vice_city_crackeado.pdf
    • https://cdn.shopify.com/s/files/1/0441/0513/8328/files/10115694937.pdf
    • https://cdn.shopify.com/s/files/1/0431/0876/1764/files/chemical_engineering_design_towler_2nd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0433/9879/1329/files/kelemuf.pdf
    • https://cdn.shopify.com/s/files/1/0433/2371/9845/files/kixitojavojubitibug.pdf
    • https://cdn.shopify.com/s/files/1/0435/4496/9367/files/anosmia_causas.pdf
    • https://cdn.shopify.com/s/files/1/0429/7526/4924/files/fosibefapatomi.pdf
    • https://cdn.shopify.com/s/files/1/0427/8226/1415/files/80334594169.pdf
    • https://cdn.shopify.com/s/files/1/0431/6564/7012/files/2807048998.pdf
    • https://cdn.shopify.com/s/files/1/0447/5338/7674/files/tepodisumibekijupeno.pdf
    • https://cdn.shopify.com/s/files/1/0432/6470/4662/files/essential_college_physics_volume_1_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0437/4816/3735/files/dabekusexasotulumox.pdf
    • https://cdn.shopify.com/s/files/1/0436/5680/6553/files/zevijaganafasotij.pdf
    • https://cdn.shopify.com/s/files/1/0438/4840/1046/files/4016597793.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ca5.bin
5b554fea2e2f9a19dcce84d0a2418814ff614744d763d463ee2e174c9a6fd8a3
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CA5 5812 bytes
font_01_sfnt_off0000805a.bin
489aece55f94516cb83db1ff70503ff154a5847949296baa549c45a89f033258
pdf-font-stream PDF embedded font (sfnt) at offset 0x805A 15768 bytes